中国激光, 2019, 46 (11): 1102005, 网络出版: 2019-11-09   

激光视觉传感系统的电弧增材制造侧表面成形分析 下载: 967次

Side-Surface-Form Analysis of Arc Additive Manufacturing Based on Laser Vision Sensing System
作者单位
广东工业大学广东省焊接工程技术研究中心, 广东 广州 510006
摘要
针对多层单道电弧增材制造侧表面成形检测问题,通过激光视觉传感三维重构系统获取不同焊接条件下焊缝侧表面轮廓深度点云信息,利用RANSAC(Random Sample Consensus)和KNN(K-Nearest Neighbors)点云处理算法提取堆积层侧表面的三维点云。分析多层单道焊缝堆积的层间分布情况,量化堆积层侧表面粗糙度,进而探索堆积过程中焊丝末端与板材间距对堆积层三维成形的影响。研究结果表明,激光视觉传感系统能够准确判断电弧增材侧表面成形情况,三维点云算法可用于电弧增材侧表面的三维重构和特征提取,能够直观地描述和量化堆积层的三维成形特征,为电弧增材制造表面成形检测和量化分析提供了一种新方法。
Abstract
A laser vision sensing three-dimensional (3D) reconstruction system has been designed to collect the surface-profile-depth point cloud information of the welded side surfaces under different welding conditions and to solve the problem of surface-form detection of the side surfaces obtained by using multi-layer single-channel arc additive manufacturing. Point cloud processing algorithms, such as RANSAC (Random Sample Consensus) and KNN (K-Nearest Neighbors), are used to extract the 3D point cloud of a deposition layer. We analyze the interlayer distribution of the multi-layer single-channel weld deposition, quantify a side-surface roughness of the deposition layer,and investigate the influence of the distance between the end of the welding wire and the plate on the 3D forming of the deposition layer. The results denote that the laser vision sensing system can accurately determine the surface-forming condition of the side surfaces obtained by using arc additive manufacturing. The 3D point cloud algorithm is used for 3D reconstruction and feature extraction of the side surfaces obtained by using arc additive manufacturing to visually describe and quantify the 3D forming features of the deposition layer, providing a novel method for performing surface-form inspection and quantitative analysis in case of arc additive manufacturing.

马波, 高向东, 黄怡洁, 张艳喜, 游德勇, 张南峰. 激光视觉传感系统的电弧增材制造侧表面成形分析[J]. 中国激光, 2019, 46(11): 1102005. Bo Ma, Xiangdong Gao, Yijie Huang, Yanxi Zhang, Deyong You, Nanfeng Zhang. Side-Surface-Form Analysis of Arc Additive Manufacturing Based on Laser Vision Sensing System[J]. Chinese Journal of Lasers, 2019, 46(11): 1102005.

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